XPost: alt.comp.os.windows-11   
   From: nospam@needed.invalid   
      
   On Tue, 2/18/2025 3:37 AM, Daniel70 wrote:   
   > On 17/02/2025 1:45 am, s|b wrote:   
   >> On Mon, 17 Feb 2025 00:39:31 +1100, Daniel70 wrote:   
   >>   
   >>> Which got me thinking ...... What's the difference between DVD-R   
   >>> and DVD+R??   
   >>   
   >> The main difference between DVD-R+ and DVD-R- formats lies in the recording   
   technology and how the discs handle data.   
   >>   
   >> DVD-R (minus):   
   >   
   >>     Developed by the DVD Forum. Uses a pre-grooved   
   >> *spiral* for writing data, and the laser writes data in the grooves.   
   >   
   > "spiral"?? Old Records, sure, but I thought CDs/DVDs had multiple actual   
   > rings/tracks!!   
      
   There are actually two different kinds of DVD.   
      
   Most DVD types are spiral. It is one long 4.7GB track.   
      
   However, DVD-RAM uses concentric circles. The article says it is hard-sectored   
   by having marks on the disc for synchronization (like a write-splice in a   
   sense).   
      
      https://en.wikipedia.org/wiki/DVD-RAM   
      
         "DVD-RAMs were originally solely sold in disc caddy cartridges;   
          recent DVD recorders can work with discs either with or without a   
   cartridge,"   
      
   A lot of people have gone through life, without ever   
   seeing one of those. You are more likely to have   
   seen an M-O media (magneto-optical) cartridge than a DVD-RAM.   
   Artists and people doing adverts in Illustrator,   
   are more likely to use M-O for storage.   
      
   The drive next to me, has this:   
      
   GH22LP20  22X drive   
      
   DVD-ROM (SL/DL)            read   
   DVD-R/-RW                  read/write   
   DVD-R  DL                  read/write   
   DVD-RAM (V2.0 or higher)   read/write  <=== can handle raw disc, just not the   
   cart   
   DVD-Video (CSS Compliant)  read   
   DVD+R/+RW                  read/write   
   DVD+R  DL                  read/write   
   CD-R/-RW                   read/write   
   CD-ROM                     read   
   CD-DA (DAE)                read   
   LightScribe                     write   
      
      Paul   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)